How do I paint over backer board designed for water areas?
Failed wall application on a remodeled master bath. Remodel about 3 years ago. Plaster and paint crumbling off walls. In some places no plaster just old paint. Under the old paint where there is no plaster looks like drywall designed for water areas, there is no paper over it like traditional drywall but a heavy coating. Can I just paint over it?????